Merge branch '5.3' into 5.4

* 5.3:
  fix cs
  Update validators.lv.xlf
  Fix API gateway service name
  Fix CS in composer.json
  Update validators.uz.xlf
  [ExpressionLanguage] Fix LexerTest number types
  [Process] intersect with getenv() to populate default envs
  Improve CI script a bit
  Fix Loco Provider
  [Cache] fix dbindex Redis
  Fix typos in a test message
  Never rely on dynamic properties

Author: nicolas-grekas

composer.json

@@ -23,7 +23,7 @@
     "require-dev": {
         "symfony/event-dispatcher-contracts": "^2",
         "symfony/http-client-contracts": "^2",
-        "symfony/messenger": "^4.4 || ^5.0|^6.0"
+        "symfony/messenger": "^4.4|^5.0|^6.0"
     },
     "conflict": {
         "symfony/http-kernel": "<4.4",